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Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators
Zhao, ZY; Zheng, XB; Peng, W; Zhao, HW; Zhang, JB; Luo, ZJ; Shi, WZ
2017
Source PublicationOPTICAL MATERIALS EXPRESS
ISSN2159-3930
Volume7Issue:6Pages:1950-1961
Subtype期刊论文
AbstractWe demonstrate a localized slow light phenomenon in a symmetry broken metamolecule (MM) of conductively coupled dark resonators at a terahertz band. Under a dark-mode excitation condition, the single mode resonance becomes dual modes by breaking the uniaxial symmetry of MM. Thus, a transparency window exists in between dual modes. An interaction of V-shaped plasmonic antenna-type (VA) resonances results in a plasmoninduced transparency (PIT) when the asymmetric deviation is below 13 ae m. A maximum 25.9 ps group-delay of incident THz pulse is observed at the transparency window. When the asymmetric deviation is beyond 13 mu m, one excitation pathway switches from VA resonance to the inductor-capacitor (LC) resonance, which dominates the high-frequency side-mode. Then, the PIT effect transfers to the PIT-like behavior and the slow light phenomenon vanishes. The aforementioned discovery allows for a speed modulation of slow light via symmetry breaking in MM. (C) 2017 Optical Society of America
KeywordPlasmon-induced Transparency Electromagnetically Induced Transparency Planar Metamaterial Analog Optics
DOI10.1364/OME.7.001950
WOS KeywordPLASMON-INDUCED TRANSPARENCY ; ELECTROMAGNETICALLY INDUCED TRANSPARENCY ; PLANAR METAMATERIAL ; ANALOG ; OPTICS
Indexed BySCI
Language英语
WOS IDWOS:000404733900022
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28718
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Zhao, ZY,Zheng, XB,Peng, W,et al. Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators[J]. OPTICAL MATERIALS EXPRESS,2017,7(6):1950-1961.
APA Zhao, ZY.,Zheng, XB.,Peng, W.,Zhao, HW.,Zhang, JB.,...&Shi, WZ.(2017).Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators.OPTICAL MATERIALS EXPRESS,7(6),1950-1961.
MLA Zhao, ZY,et al."Localized slow light phenomenon in symmetry broken terahertz metamolecule made of conductively coupled dark resonators".OPTICAL MATERIALS EXPRESS 7.6(2017):1950-1961.
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